Round heart disease of the domestic fowl (Gallus gallus) in Bulgaria.
D000818:Animals; D002031:Bulgaria; D002645:Chickens; D006331:Heart Diseases / Q000188:drug therapy / Q000453:epidemiology / Q000473:pathology / Q000662:veterinary*; D009206:Myocardium / Q000473:pathology*; D011201:Poultry Diseases / Q000188:drug therapy / Q000453:epidemiology / Q000473:pathology*; D012643:Selenium / Q000627:therapeutic use
D012643:Selenium